The HC100 HART Combined Intelligent Terminal is a portable handheld intelligent terminal that supports the HART communication protocol and features wireless Bluetooth functionality. The HC100 product consists of a HART intelligent terminal, a Bluetooth HART modem, and the FieldHand main program. It can be flexibly applied to various tasks in field operations, including initial setup, daily inspection, fault diagnosis and debugging, configuration, and maintenance. It realizes full DD (Device Description) file parsing of the HART communication protocol for Yokogawa DPharp EJA/EJX series and YTA series transmitter products, providing an intuitive operation and integrated application platform. The HC100 comes pre-installed with FieldHand, a HART communication protocol configuration software with full DD parsing independently developed by Chongqing Yokogawa Chuanyu Instrument Co., Ltd. This software has passed the evaluation by national authoritative institutions and complies with the GB25000.51 software specification.